Chiang Mai Journal of Science

Petrography and REE Geochemical Characteristics of Felsic to Mafic Volcanic /Hypabyssal Rock in Nakhon Sawan and Uthai Thani Provinces, Central Thailand

Paper Type	Contributed Paper
Title	Petrography and REE Geochemical Characteristics of Felsic to Mafic Volcanic /Hypabyssal Rock in Nakhon Sawan and Uthai Thani Provinces, Central Thailand
Author	Patcharin Kosuwan Jundee*, Phisit Limtrakun, Apichet Boonsoong and Yuenyong Panjasawatwong
Email	kosuwanp@hotmail.com
Abstract: The felsic to mafic volcanic/hypabyssal rocks in the area of Nakhon Sawan and Uthai Thani Provinces, Upper Central Plain Thailand were distributed in the area of Tha Tako, Krok Phra and Chum Ta Bong, covering an area of approximately 200 km2. The least-altered mafic to felsic volcanic/hypabyssal rock samples can be divided into five groups Group I rocks (calc-alkalic), Group II rocks (calc-alkalic), Group III rocks (tholeiitic), Group IV rocks (tholeiitic) and Group V rocks (shoshonitic) using REE patterns and N-MORB normalized multi-elements patterns. Group I rocks compose of rhyodacite/dacite, andesite/basalt and diorite/gabbro. Group II rocks compose of diorite/gabbro. Group III and Group IV rocks compose of andesite/basalt and microdiorite/microgabbro. Group V rocks compose of rhyodacite/dacite. N-MORB normalized multi-element patterns suggest that Groups I, II and V rocks have characteristics of subduction-related magma and Groups III and IV rocks have been crystallized from MORB-like magma that contains crustal signature.
Start & End Page	1722 - 1734
Received Date	2015-03-23
Revised Date
Accepted Date	2015-11-30
Full Text	Download
Keyword	Felsic-mafic volcanics, Nakhon Sawan-Uthai Thani volcanics, Petrography, REE
Volume	Vol.44 No.4 (October 2017)
DOI
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